GFC Diagnostics was formed in 2007 to promote and develop the SmokeScreen and other SafeTube products.

Welcome to GFC Diagnostics Ltd.

We arespecialists in point of care detection (POC) of smoking and cotinine measurements and treatment adherence in TB.

We have an active R & D programme based on a novel DNA hybridisation technology and have developed a rapid, POC test for detection of MRSA. This test has been taken to proof of concept, with plans to broaden the range to include other antibiotic resistant bacteria.

This is a novel DNA hybridisation technology that has been adapted for use in the SafeTube device that is used in the SmokeScreen and IsoScreen tests. The technology has been shown to detect the gene in MRSA (the so called “superbug”) within 30 minutes, giving a coloured end product. It needs no extraction of the DNA and so is ideal for use in a POC situation. It is planned to adapt the technology to rapidly detect a range of bacteria associated with antibiotic resistance.

Is a 5-minute test to detect cotinine and the other nicotine metabolites by a colorimetric reaction.

Urine SmokeScreen: Provides a quantitative measure of cotinine and the other nicotine metabolites when used with the SmokeScreen Analyzer. This instrument automates the mixing and timing of the test and is sensitive enough to detect down to passive smoking levels. The test can be used simply with a colour chart to provide a semi-quantitative measurement of nicotine intake.

We have developed a sensitive assay for cotinine and the other nicotine metabolites in saliva. The test is currently used in pharmacies to assess smoking habit, whether as part of insurance wellbeing assessments or smoking cessation interventions.Saliva cotinine testing is the only simple means of assessing the use of electronic cigarettes as they do not generate carbon monoxide(CO).

Is a urine test which detects the metabolites of isoniazid, an antibiotic drug used in the treatment of tuberculosis. This test is used to monitor treatment adherence in patients with TB, and helps to prevent the development of multidrug resistance.